Otto m



(No Model.) U

0. M. BONNEY & N. D. LAMOREUX.

ATTACHMENT T0 SEWING MAGHINES. No. 286,994. Patented Oct. 253 1883.

4 Fig.

'- TlTiifi-sses; [iyve'rz for.

N. PETERS. Phalohimgmpher. Wnhinnm. n.c.

UNITED STATES PATENT OFFICE.

OTTOM. BONNEY AND NORMAN 1o. LAMOREUX, or s'r. Louis, Mrssonnr.

ATTACHMENT FOR SEWING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 286,994, dated October 23, 1883.

Application filed May 28,128.... (No-model.)

To all whom it may concern:

Be it known. that we, Orro M. BoNNEY and NORMAN D. LAMOREUX, residents of St. Louis, Missouri, have jointly made a new and useful Improvement in Attachments for Sewing-Maprovement is immediately associated; Fig. 2,

an end elevation; Fig. 3, a view, being -a side elevation and section of the frame used in applying the attachment; and Fig. 4, a similar View of the attachment.

The same letters of reference denote the same parts.

The present invention consists in a grindstone adapted to be readily attached to the balance-wheel of any of the ordinary sewingmachines.

A represents the bed-plate of the machine, B the arm, 0 the shaft, and D the balancewheel. all of the ordinary construction.

E represents the grindstone. It is attached to the balance-wheel D, so as to rotate therewith, and in that position to serve the pn rpose of an ordinary grindstone. To this end the grindstone is made annular in form, as shown more distinctly in Fig, 4, and is fastened to the balance-wheel by means of the frame F;

The wheel is slipped onto the part f of the frame and clamped thereon by means of the plate f, which, by means of the screws J, is fastened to the plate fyaud so that the stone is held between the projecting flanges ff f. The frame of the stone thus attached is then fastened to the balance-wheel as follows: The part f of the frame F is shaped at toifit the side of the rim of the balance-wheel, and it is provided with the ears 1. These ears are perforated to receive the hook-shaped bolts G G, which pass through the ears and hook round the arms d d of the balance-wheel, and by means of the nuts 9 the bolts are tightened and the frame is secured to the balance-wheel. In this manner, without in any respect altering the construction of the sewing-machine, a

grindstone can be attached thereto and operin opei g i e machine, and, if desired, at

the same time. The part f of the frame is provided with projections ff'to engage in the notches e inythe frame E. This prevents the stone from turning around upon the frame.

We do not wish to be confined to any special form of sewing-machine, as it is evident that it can be applied to the balance-wheel of any of the ordinary types of sewing-machines. The stone can be readily detached'from the machine by loosening the bolts G G, whenever desired.

\rVe claim 1. A'sewing-machine balance-wheel, D, the frame F, and the grindstone E, and themeans for securing the frame to the balance-wheel, combined substantially as describedj 2. The combination of the annular grind-' stone E and the annular frame F, consisting of the plates ff, fastened together, substantially as described.

3. The combination of the balance-wheel D, the grindstone E, the plate f, the plate f, shaped to fit the balance-wheel and provided with the ears f and the hook-shaped bolts G G and nuts 9, substantially as described.

4. The combination of the balance-wheel D, the grindstone E, the frame F, said frame consisting of the plate f, adapted to be secured to the plate f, which in turn is adapted to be clamped to the balance-wheel by means of the ears f 6 and the hook shaped bolts G and nuts 9, substantially as described.

5. The combination of the annular grindstone E, having the notches e and the plates f f, said plates being fastened together, and said plate f having the projections f and being fastened to the balance-wheel D.

6. A sewing-machine balance-wheel having an annular grindstone fastened to a frame,

which in turn is fastened to the rim of the V balance-wheel. p

7. A sewingmaehine. balance-wheel having a grindstone detachably connected with the balance-wheel rim. I

In testimony whereof we have affixed our signatures, in the presence of two witnesses, this 23d day of August, 1883.

OTTO M. BONNEY. NORMAN D. LAMOREUX.

Witnesses:

J OHN W. VossLER, PAUL BAKEWELL. 

